Spark - The
Spark series are the perfect choice for personal noise exposure
sampling in the workplace. Weighing only 7 ounces, they are
intrinsically safe data logging dosimeters

There are seven Spark
models available with a full range of capabilities. Choose from
basic dataloggers with no display, display-only units, or take
advantage of the power of I2CU* with multiple unit
Combo-paks!